Abstract: In a ventilation system of a motor vehicle, a film valve can selectively open and close an air path opening defined by a housing with a rib or projection that encircles such opening. The rib can define a point contact between the film valve and the housing when viewed in cross-section. The rib geometry can include substantially straight edges in cross-section and/or can include arcuate edges. Different geometry can define the rib at different cross-sections. The point contact defined between the rib and the film valve substantially reduces noise generated when the film valve moves relative to the rib, especially when the film valve has been subjected to a harsh environment.

Abstract: In a disk array system, cooling means with a great versatility capable of efficiently performing a cooling and a heat radiation of the objects to be cooled on the circuit board in a small space and a structure capable of stably supplying the power from a DC—DC converter to the electronic components on the circuit board are provided. A circuit board is stored in a logic box in a state where a heat sink is fitted thereto, a power supply section supplies a voltage to the circuit board, and a fan is used in the ventilation for the circuit board. The circuit board has an LSI and a wiring area as the objects to be cooled. A heat sink including a base part having a flat surface to cover the whole of the objects to be cooled and radiator fins is provided. The board fitted with the heat sink is assembled in such a manner.

Abstract: In an air passage switching device using a film-type sliding door for an air-conditioning unit for a vehicle. A grid member is provided in an air passage to extend parallel with the sliding direction of a sliding door and divide an opening of the air passage into a plurality of smaller openings. The sliding door has a film member, a door plate supporting the film member, and elastic pressing means for pressing the film member against edge seal faces of the air passage. A grill spacing between the door plate and the end face of the grid member, is larger than an edge seal face spacing between the door plate and the edge seal faces.

Abstract: A ventilation unit for a motor vehicle is provided comprising a housing with air ducts for supplying air through panel openings into the interior of the vehicle. At least one draft tube is disposed in the housing adjacent said panel openings, where the at least on draft tube includes an outlet slot arranged to be exposed to the air stream exiting the panel openings. The draft created by the air stream crossing over the slot draws hot air from the interior of the draft tube to be mixed with the exiting air stream. The amount of drafting created by the air stream depends on the velocity of the exiting airflow. This relationship in turn makes the ventilation unit of the present invention perform as a passive device.

Abstract: In an air conditioning unit of a vehicle air conditioner, an air-outlet mode switching portion is provided at an upper side of a heat exchanging portion including at least a heating heat exchanger for heating air. The air-outlet mode switching portion includes a rotary door rotatable around a rotation shaft, and the rotary door includes a circumference wall surface for opening and closing plural air outlet openings through which air is blown toward different zones of a passenger compartment. Further, the heating heat exchanger is arranged to be crossed with a horizontal surface, and a rotation space of the rotary door is provided to extend from an upper side of the heating heat exchanger to a side portion of the heating heat exchanger. Accordingly, the size of the air conditioning unit can be made smaller.

Abstract: There are provided an air mixing door, a plurality of outlets for blowing air into respective portions in a vehicle compartment, outlet mode doors for switching a outlet mode by closing and opening the plurality of outlets, and one motor actuator for driving the air mixing door and the outlet mode doors. The outlet mode doors and the air-mixing door are alternately driven through a change of an operation angle of the motor actuator.

Abstract: A door assembly (30) for a vehicle HVAC system comprises a shaft (140) made of a first material and having an axis (144) of rotation. A first door (142) projects from the first shaft (140) and is made of the first material. The first door (142) is molded together with the shaft (140). A sleeve (150) is made of a second material that has a lower melting point than the first material to enable the sleeve to be molded over the shaft (140). The sleeve (150) is disposed coaxially about the shaft (140) and is rotatable about the axis (144) relative to the shaft. A second door (152) projects from the sleeve (150). The second door (152) is made of the second material and is molded together with the sleeve (150). The second door (152) is rotatable relative to the first door (142).

Abstract: An air guide box, in particular for a heating, air conditioning and/or ventilating installation in a motor vehicle, comprising at least an air treating device (10, 12), at least an air channel (20) extending through the air treating device (10, 12), and at least an air channel (30) bypassing the air treating device (10, 12) and at least two outlet channels (40, 50), emerging in a gap (3) such that each time an outlet channel (40, 50) is substantially opposite one of the other channels (20, 30), a device (1) mobile about an axis (2) being arranged in the gap (3), which device has an air guiding element in the form of a channel (4, 5, 6, 7) and provides, in specific positions, an air passage with practically no pressure drops between two mutually opposite channels (20, 40; 30, 50), and an air passage subjected to pressure drops between other opposite channels (30, 50; 20, 40).

Abstract: The invention relates to a method and an arrangement for regulating air mixing in a heating and/or air-conditioning system of a motor vehicle. In the system, recirculated air and/or fresh air is/are distributed via air-flow control elements to different air vents and supplied to the passenger compartment. In order to optimize energy consumption and provide a simpler and therefore more cost effective arrangement, the proportion of recirculated air is determined as a function of the position of the air-flow control element(s). The control unit is designed in such a manner, e.g., by implementation of a computer program, that signals being emitted by the control unit for opening the recirculated-air intake opening are dependent on, inter alia, the position(s) of the air-flow control element(s).

Abstract: A mix door (5) is arranged in air passages (10, 11) of an automotive air conditioning device. The mix door (5) is arranged to extend in a direction to shut an air flow blown from the upstream air passage (10) and swelled in a downstream direction with a predetermined radius of curvature. The door (5) is guided by arcuate cam grooves (19) and driven upward and downward to achieve open/close operation with the aid of a sliding mechanism (M). Compact construction, reduction in air flow resistance, smoothed handling, high sealing and high temperature controlling are achieved.

Abstract: A motor vehicle cabin has four seat positions and a heating and ventilating apparatus which includes means for producing hot and cold air streams, temperature control means, air distribution ducts having outlets at different points in the cabin at each seat position, and distribution means for adjustably distributing the mixture of the cold and hot air streams between the various air distribution ducts. These ducts include ducts which are open in at least two different points in the rear seat positions, each of which has its own temperature control means for adjusting the air temperature at that position, and means for adjusting the flow of air to that position.

Abstract: The present invention provides anchor tabs at opposite ends of a film member that are anchored to side faces of a door plate of a sliding door. Draft deflectors prevent the inflow of air to between the anchor tabs and the side faces of the door plate. Thus, inflow of air to between the anchor tabs of the film member and the side faces of the door plate is prevented. Also, fluctuations in pressure difference between the inner and outer sides of the anchor tabs are suppressed, and the production of extraneous noise caused by self-excited vibration of the anchor tabs at the ends of the film member is suppressed.

Abstract: A door and housing assembly for controlling air flow through the housing. The housing is adapted to be mounted in a ventilating system for controlling the direction and flow of air passing through the system. The door is actuated to move between two end positions where the respective air pathways are each sealed. The door can be positioned at any location between the end positions to control air flowing to the respective air pathways. The door includes guide pins on edges thereof that move along slots located in the inner sidewalls of the housing and guide the door between its end positions to locate the door in selected intermediate positions thereof. The slots for guiding the door may be steeply angled with respect to the seals so as to create minimal wiping of the respective seals upon engagement and dis-engagement between the door and seals at end positions of door travel.

Abstract: In an air conditioning apparatus for a vehicle, a first cool air bypass passage is provided at an upper side of a heater core, and a second cool air bypass passage is provided at a lower side of the heater core. Cool air from the first cool air bypass passage and warm air having passed through the heater core are mixed in a first air mixing chamber, and a ratio between an amount of cool air and an amount of warm air is adjusted by an air mixing film member. Further, cool air from the second cool air bypass passage and warm air from the heater core are mixed in a second air mixing chamber, a ratio between an amount of cool air and an amount of warm air is adjusted by an air mixing door, and the second air mixing chamber is provided at an immediately downstream air side of the heater core. Thus, in the air conditioning apparatus, a pressure loss in a ventilation system can be reduced.

Abstract: A mix door D, which is arranged in a limited space defined between an upstream air passage 10 in which an evaporator 3 is installed and a downstream air passage 11 in which a heater core 4 is installed, is of a sliding type. By guiding a door proper 12 by using a cam groove, a seal member 15 bonded to the door proper 12 is pressed against a contacting member 13 only when the door proper 12 assumes its close position. Smoothed operation of the door proper 12 is achieved with a compact construction of a unit, and sealing and temperature controlling performance is increased.

Abstract: An outflow element for motor vehicles has a frame defining an outflow opening and at least one guide element mounted on the frame for guiding air exiting through the outflow opening. The at least one guide element has at least one illuminated display which displays differently as a function of the temperature of the air exiting through said outflow opening. The display is part of a light guide provided on the at least one guide element and is illuminated by light sources of different colors.

Abstract: An enclosure for treating air (1) of a passenger compartment, especially of a motor vehicle, comprises an inlet (2) which supplies cool air to a mixing chamber (4) and a heating chamber (5) supplying the mixing chamber with heated air. It further comprises a front channel (12) supplied from the mixing chamber with treated air intended for a front area of the passenger compartment, and a rear channel (15) supplied from the mixing chamber (4) with treated air intended for a rear area of the passenger compartment.

Abstract: An inside/outside air switching box has first and second inside air introduction ports, and an outside air introduction port. An inside/outside air switching door is disposed to open and close the first inside air introduction port and the outside air introduction port, and the second inside air introduction port is opened and closed by an inside air auxiliary door operated due to a pressure difference generated by operation of a blower fan between an inner side of the inside/outside air switching box and an inner side of a passenger compartment. Accordingly, even in an outside air introduction mode, inside air can be introduced from the second inside air introduction port.

Abstract: A mix door (5) is arranged in air passages (10, 11) of an automotive air conditioning device. The mix door (5) is arranged to extend in a direction to shut an air flow blown from the upstream air passage (10) and swelled in a downstream direction with a predetermined radius of curvature. The door (5) is guided by arcuate cam grooves (19) and driven upward and downward to achieve open/close operation with the aid of a sliding mechanism (M). Compact construction, reduction in air flow resistance, smoothed handling, high sealing and high temperature controlling are achieved.

Abstract: A mix door (5) is arranged in air passages (10, 11) of an automotive air conditioning device. The mix door (5) is arranged to extend in a direction to shut an air flow blown from the upstream air passage (10) and swelled in a downstream direction with a predetermined radius of curvature. The door (5) is guided by arcuate cam grooves (19) and driven upward and downward to achieve open/close operation with the aid of a sliding mechanism (M). Compact construction, reduction in air flow resistance, smoothed handling, high sealing and high temperature controlling are achieved.

Abstract: A vehicle air-conditioning system that independently controls left-right air flow distribution in correspondence with left and right heat loads during a maximum cooling mode. In the system, blowout air flow is increased when driver seat side and passenger seat side air-mixing film members are both positioned in a maximum cooling position, and the heat load has risen in only one of a driver seat side space and a passenger seat side space in a passenger compartment. Further, each respective film member is operated to fully open a cool air bypass passage on the side on which the heat load has risen and the respective film member corresponding to the side on which the heat load has not risen significantly is operated to reduce the open area of the cool air bypass passage. At the same time, fan speed is increased to increase the air blow amount.

Abstract: A mix door D, which is arranged in a limited space defined between an upstream air passage 10 in which an evaporator 3 is installed and a downstream air passage 11 in which a heater core 4 is installed, is of a sliding type. By guiding a door proper 12 by using a cam groove, a seal member 15 bonded to the door proper 12 is pressed against a contacting member 13 only when the door proper 12 assumes its close position. Smoothed operation of the door proper 12 is achieved with a compact construction of a unit, and sealing and temperature controlling performance is increased.

Abstract: The present invention provides anchor tabs at opposite ends of a film member that are anchored to side faces of a door plate of a sliding door. Draft deflectors prevent the inflow of air to between the anchor tabs and the side faces of the door plate. Thus, inflow of air to between the anchor tabs of the film member and the side faces of the door plate is prevented. Also, fluctuations in pressure difference between the inner and outer sides of the anchor tabs are suppressed, and the production of extraneous noise caused by self-excited vibration of the anchor tabs at the ends of the film member is suppressed.

Abstract: According to the present invention, even when the two-layer mode in which the inside air is introduced into a first air passage and the outside air is introduced into a second air passage is set, it is further determined whether air mix doors are controlled at the maximum hot positions. When it has been determined that the air mix doors are controlled at the maximum hot positions, the inside/outside air introduction mode is still set to the two-layer mode, because the temperature difference due to the outside air temperature is small, however, otherwise, the inside/outside air introduction mode is not set to the two-layer mode but is set to a mode in which the outside air is introduced into the both air passages. In this way, it is possible to prevent the difference between the temperatures of the air blown out from a defroster opening portion and a foot opening portion from being increased due to the temperature of the outside air.

Abstract: A motor vehicle air-conditioner having a structure that reduces production costs. Main and sub air-mixing doors and an inner-air FOOT door are mechanically interlocked with a single air-mixing door actuator. The shape of an engagement hole of a main link plate of a door-interlock device is formed to correspond to an operation pattern to rotate the main and sub air-mixing doors from MAX COOL to MAX HOT in an interval where a servomotor opening degree is from 0% to 80%. The shape of an engagement hole of a main link plate is such that the plate functions as a lost motion link plate that corresponds to an operation pattern to rotate the inner-air FOOT door from a fully closed state to a fully open state in an interval where the servomotor opening degree is from 80% to 100%. As a result, opening of the inner-air FOOT door becomes difficult even when the main and sub air-mixing doors are opened, and so leakage of conditioned air from a foot vent can be prevented.

Abstract: The invention relates to a heating or air-conditioning system for vehicle interiors having an air distributor which is connected to an air guiding duct and has air outlet openings for the lower plane of the vehicle interior. An air guiding duct with air outlet openings for a center plane of the vehicle interior is connected by way of a cold-air inlet with the cold-air duct and by way of a warm-air inlet with the air distributor. One cold-air or warm-air flap respectively is in each case assigned to the cold-air and warm-air inlet. The flaps are configured and disposed for the purpose of a faster cooling of the vehicle interior by the large-area flowing of cold air into all areas of the vehicle interior.

Abstract: In an air conditioner for a vehicle, a temperature control unit includes a first air mixing door for adjusting an opening degree of a cool air passage through which air having passed through an evaporator bypasses a heater core, and a second air mixing door for adjusting an opening degree of an air inlet portion of the heater core. At least the second air mixing door between the first and second air mixing doors is a butterfly door having a rotation shaft at a center in a door width direction. When an inside/outside air double-layer flow mode is set, the second door partitions an air passage between the evaporator and the heater core into a first air passage through which outside air flows and a second air passage through which inside air flows while fully opening the air inlet portion of the heater core. Thus, in the air conditioner, a distance between the evaporator and the heater core is reduced while partition performance between inside air and outside air due to the second air mixing door is improved.

Abstract: A case of an air conditioning system for a car includes a main body having a main path through which air supplied from a blower unit passes and a first path formed at the exit of the main path, a housing portion formed on top of the main body in which second and third paths communicating with the main path are formed, a rotating door which has an air stream path and which has rotatably installed inside the housing portion for selectively providing air received from the main path to the second and third paths, a heat exchanger installed in the main path, and a door unit installed on the boundary between the housing portion and the main path of the main body for allowing some or all of the air supplied from the blower unit to pass to the housing portion or to pass to the housing portion via the heat exchanger.

Abstract: Four air flow control doors of an automotive air conditioning device are synchronously controlled by a link mechanism. With a unique construction of the link mechanism, the following advantageous results are obtained. In a ventilation mode of a maximum cool condition, sufficient amount of cooled air can be blown into the vehicle cabin from a ventilation opening. In the ventilation mode of a half-hot condition, mixing of cooled air and warmed air is effectively carried out before being blown into the vehicle cabin. In a bi-level mode of the half-hot condition, the passengers in the vehicle cabin can enjoy a so-called "lower side warming and upper side cooling" air conditioning wherein the lower portion of the vehicle cabin is suitably warmed and the upper portion of the vehicle cabin is suitably cooled.

Abstract: An air conditioning apparatus for a vehicle includes an evaporator and a heater core disposed approximately horizontally. In the air conditioning apparatus, an air-mixing door for adjusting a flow ratio of air passing through the heater core and air passing through a bypass passage is disposed, and air guide plates for guiding air are formed on a surface of the air-mixing door, positioned at a side of the bypass passage. A blower is disposed so that air is blown in an air-blowing direction approximately horizontally, and thereafter flows upwardly toward the heater core. The air guide plates guide air from a forward side toward a backward side of the air-blowing direction. Thus, in the air conditioning apparatus, a flow distribution and a temperature distribution of air to be blown toward the passenger compartment can be made uniform.

Abstract: The apparatus includes a casing, in which a fresh air passage member has an inlet port communicating with a fresh air inlet, and an outlet port open into an outlet chamber, which is fed through a mixing zone and which in its turn supplies a ventilating duct and a heating duct, the passage member containing internal deflecting walls for encouraging mixing of a stream of fresh air with a stream of mixed air at the outlet of the said passage member.

Abstract: A temperature adjusting unit portion is constructed by two division cases, and the two division cases have vertically divided type case structure, each of which has a division surface in a vertical direction. An evaporator and a heater are held and accommodated in the division cases. Between the division cases of the division case below the evaporator, there is provided a sealing member formed in a stick shape and in a circular shape in a cross section thereof.

Abstract: An improved film type air temperature control valve for an automotive HVAC assembly has a flexible, apertured belt that wraps closely around both faces of a heater core case internal to the HVAC housing. Winding and unwinding of the belt around the heater core case, and across a heater core bypass passage, simultaneously opens up more of the bypass passage as it closes off more of the heater core faces, and vice versa. Because of the close conformance of the belt to and across the heater core faces, both faces of the always hot heater core can be completely closed to direct or indirect air flow, preventing any undesired incidental heating of the air flow.

Abstract: In an air duct selector, a supporting member has a grid shape, and is formed with four penetration holes. Since a film member is affixed to two fitting portions which are arranged on two ends of the supporting member, the film member is fixed on the supporting member. The supporting member and the film member are arranged in a duct to move in a vertical direction. When air flow is blown against the inside surface of the film member through the penetration holes 24a.about.24d, the film member is bent to swell against the film member, and presses against a peripheral portion of a cool air bypass opening portion to entirely cover the cool air bypass opening portion.

Abstract: A motor vehicle heating and ventilating, and/or air conditioning, installation includes a heating and air distribution unit comprising a casing, the inlet of which is connected to the delivery side of a motorised fan unit. The casing has two outlets, namely a "feet" outlet leading to a lower part of the cabin of the vehicle, and a ventilation outlet, also leading into the cabin. The casing is divided into three ducts. Each of the first and second ducts has an upstream end open at the inlet of the casing, and a downstream end communicating with the feet and ventilation outlets of the casing respectively, under the control of a first flap valve and a second flap valve respectively. The third duct lies between the first and second ducts and has a central portion containing a heat exchanger.

Abstract: In switching of opening and closing air passage opening portions of an automotive air conditioning apparatus, a circumference one end of the film member is secured to one end in a circumferential direction of the rotary door by a pin member, and the other end in a circumferential direction of the film member is set to be a free end which is movable with reference to a slide wall portion of the rotary door. The variation in dimension of the film member or the case side is absorbed by movement of the free end.

Abstract: According to the present invention, a sliding door is positioned between the cooler and the heater and slidable in a direction crossing both the cool air passage and the warm air to control each amount of air flowing to the warm air passage and air flowing to the cool air passage, and the sliding door slides vertically in such a manner that an upper portion of the sliding door inclines toward the cooler. Since the sliding door slides itself in the vertical direction, with the upper portion of the sliding door inclined to the cooler, condensed water, which is likely to move with the blown air from the cooling unit to the air downstream side, can be smoothly guided downwardly with the air flow along the inclination of the sliding door, thus preventing the stench caused by mold and corrosion of the heater.

Abstract: In an air conditioning device using a flexible film member as a blow mode switching door and by design leaking an amount of air from an air outlet in a blow mode, the amount of leaking air does not significantly change even though the position of the film member shifts from an optimal position. The width of a first opening in the device casing in the vertical direction (perpendicular to the direction of movement of the film member when shifting between blow modes) is shorter than a width of a second opening in the casing in the vertical direction. The length of a first air outlet facing the first opening portion in the direction of film member movement is greater than a predetermined length. Therefore, even if the position of the film in a foot mode is shifted, the area of the first opening is not significantly changed.

Abstract: An air duct has air passages for the air to flow from the inside to the outside. An air passage switching device includes a rotary door and a film member for opening/closing and switching the air passages. The rotary door is formed with openings in its circumferential wall having an arcuate shape. The film member having ventilation holes to lap one of the openings is mounted with a slight slackness on the outer circumference of the rotary door. When this rotary door is rotationally displaced by a control cable, the air passages lapping the ventilation holes are opened, whereas the remaining air passages are closely sealed up by the film member which is expanded by a wind pressure.

Abstract: An apparatus for heating and ventilating, and/or air conditioning, the cabin of a motor vehicle, and in particular an electric vehicle, comprises a series of elements arranged in a generally horizontal succession along the longitudinal axis of the vehicle. These elements comprise: a blower for producing a stream of cold air; a first duct fed by the blower and divided into a cold air transmission branch and an air heating branch which contains a heat recuperator; a selection flap valve for controlling the distribution of the air flow between the two branches; a second duct which receives the outlet air of both of the two branches of the first duct, and which contains at least one electric radiant heater; and a distributor fed by the second duct and including a distribution valve for distributing the cold or heated air between appropriate ventilating ports in the cabin.

Abstract: A heating and ventilating installation for the cabin of a motor vehicle includes a distributor box which has an air inlet arranged to admit a stream of cold air and a stream of heated air. The distributor box also has a plurality of air outlets, including a de-icing air outlet port. A distributor valve is arranged to pivot within the distributor box, and has a guide channel extending in a direction which is generally transverse with respect to the pivot axis of the valve, so as to direct the stream of heated air towards the de-icing air outlet port when the valve is set in a position for de-icing.

Abstract: A combined mode and temperature control valve for an HVAC housing includes a cylindrical sleeve rotatable within a stationary barrel. Hot or cold air enters lengthwise inlet slots in one side of the barrel located below or above a stationary dividing baffle in the housing. Air entering the barrel can exit to either a heater outlet, defroster outlet, or A/C outlet. The sleeve includes slots and openings which, when rotated continuously through a predetermined increment, open and close the hot and cold inlets in complementary fashion to allow in a full temperature range of hot or cold air, which mixes inside the hollow cylinder. The sleeve opens only one outlet at a time, blocking the other two, over the increment of rotation.

Abstract: A central control unit having an air-distribution control formed as a control knob that has a FLOOR LEVEL setting, a DEFROSTER setting, and a MID-LEVEL setting therebetween.

Abstract: A damper device for use in an air conditioner of a vehicle, which changes over the direction and volume of an air flow in an air conditioner when a screen (41) is slid. The screen has a laminated resin coat layer (8) or the resin film layer (5), and the cloth layer (7). The resin film layer (5) has excellent tensile and bending strength, and exhibits anti-creep properties, and further it inhibits elastic deformation or plastic deformation (initial elongation) that is the weak point of the cloth layer (7). The cloth layer (7) makes up for the tear strength that is a weak point of the resin film layer (5). The resin coat layer (8) makes up for anti-abrasion and low frictional properties that are weak points of the cloth layer (7). Each layer is provided with flexibility, moisture resistance and heat resistance, so that the entire arrangement of layers provides the necessary characteristics required for the screen.

Abstract: A heater and/or air conditioner with air-side temperature adjustment includes adjustment with an air-mix flap in front of a mixing chamber, which with a simple and compact construction, guarantees a clear separation between intake-side fresh-air conduction, on the one hand, and warm air conduction, on the other hand, and exhibits only a small air-side contact resistance. A ring-shaped heat exchanger which is closed upon itself, is provided with a ring-shaped surrounding warm-air-duct disk and an axially upstream, ring-shaped surrounding cold-air-duct disk in each case on the outlet side with a crossover branching off into a shared mixing chamber controllable by an air-mix flap with a connected floor air duct or defrost air duct.

Abstract: A heater unit of an air mixing apparatus for an automotive vehicle includes a core case for housing a heater core and a distribution case communicating with the core case. The distribution case includes a vent duct connecting port connectable to a vent duct previously fixed to an instrument panel; at least one defroster duct connecting port connectable to at least one defroster duct also previously fixed to the instrument panel; and in particular, a guide duct connectable to a side vent duct extending to a driver seat side and fixed to a vehicle body. Since the guide duct is additionally included with the distribution case, it is possible to previously fix the vent duct extending to the front passenger seat side and defroster ducts to the instrument panel, so that the duct assembly workability is improved markedly and the ducts can be reliably fixed to the instrument panel.

Abstract: An air conditioner is provided for a motor vehicle which controls the division of the blow-out air by individually adjusting the blow-out air temperature of the center vent, right side vent and left side vent over a broad temperature range. The blow-out air temperature is controlled from the upper and lower and right and left blow-out parts by the passengers of the motor vehicle to place the cabin of the motor vehicle into a comfortable temperature range. The conditioned air within the conditioned air passages is responsive to load conditions both inside and outside of the passenger compartment to individually adjust the temperature of the conditioned air. A first and second auxiliary duct which introduces cool air from the upstream side of the air mix door and warm air from the downstream side of the heater unit into the conditioned air flows through the right side vent duct, and left side vent duct, respectively.

Abstract: A heating and ventilating apparatus for a motor vehicle includes a cold air admission duct supplying the admission and heating circuit in order to produce a stream of cold or heated air for introduction into the inlet of a distribution circuit having air outlet ducts which exhaust into different parts of the cabin of the vehicle.The apparatus includes a priority demisting duct which is separate from the distribution circuit, and which has an inlet communicating with the admission and heating circuit, together with an outlet which exhausts behind the windshield. A shut-off valve is displaced between a priority demisting position, in which it closes off the inlet of the distribution circuit, and a normal position in which it closes off the inlet of the priority demisting duct.

Abstract: An override function for an automatic temperature and/or air flow controller is achieved with an individual, at least partial closing of outlet nozzles of a ventilation system independent of the controller the outlet nozzles are in the middle plane in the inside of the motor vehicle and controlled by way of a regulating device. The regulating device is additionally set as a function of a condition of an adjustable control mechanism device which is assigned to each of the outlet nozzles for the manual, at least partial, blocking of the outlet nozzles. A rotary control knob is respectively integrated into each of the outlet nozzle housings as the adjustable control mechanism, and has an assigned set potentiometer with a variable setting range including a first setpoint for automatic operation control and an override control range with a variable setpoint for the correspondingly variable blocking condition of the outlet nozzles.

Abstract: An air conditioning device for a vehicle comprising a temperature adjusting dial which is moved from a low temperature indication to a high temperature indication by an occupant. The air conditioning device includes a blower by which a volume of air blown is gradually changed from a maximum air volume to a minimum air volume to the maximum air volume again in accordance with the position of the temperature adjusting dial, a first changeover damper for changing the blowing direction of the air from the upper half of the body of the occupant to the lower half of the body of the occupant in accordance with the position of the temperature dial, and a second changeover damper for drawing in inside or outside air wherein the volume of inside or outside air allowed to enter the device is primarily based upon the position of the temperature dial. The occupant can also choose inside or outside air independent from the degree of movement of the temperature dial.